Stockholders' Equity - Comprehensive Income (Loss) - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax	$ (7,177)	$ 14,401	$ (179)
Accumulated other comprehensive loss	(17,605)	(10,428)	(24,829)	$ (24,650)
Cash flow hedge adjustment, net of tax	(268)	390	0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax	(7,313)	14,172	885
Accumulated other comprehensive loss	(15,221)	(7,908)	(22,080)	(22,965)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax	404	(161)	(1,064)	(1,685)
Accumulated other comprehensive loss	(2,506)	(2,910)	(2,749)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax		390	0
Accumulated other comprehensive loss	122	$ (390)	$ 0	$ 0
Cash flow hedge adjustment, net of tax	$ (268)